diff --git a/stdlib/public/Concurrency/Actor.cpp b/stdlib/public/Concurrency/Actor.cpp
index d70e751d455c0..681f2ea91b7c5 100644
--- a/stdlib/public/Concurrency/Actor.cpp
+++ b/stdlib/public/Concurrency/Actor.cpp
@@ -685,7 +685,7 @@ class DefaultActorImpl : public HeapObject {
 
   /// Properly construct an actor, except for the heap header.
   void initialize() {
-    new (&CurrentState) std::atomic<State>(State{JobRef(), Flags()});
+    new (&CurrentState) swift::atomic<State>(State{JobRef(), Flags()});
     JobStorageHeapObject.metadata = nullptr;
   }